In-situ catalytic pyrolysis reaction of sugarcane bagasse over nickel-cerium/hzsm-5 for enhanced hydrocarbons in pyrolysis oil

The catalytic of oxygenated pyrolysis vapour over HZSM-5 catalyst is of the preferred method to enhance the quality of pyrolysis oil. However, the content of C6 – C8 hydrocarbons in pyrolysis oil produced by this method is still low. Thus, the main aim of this study is to investigate the in-situ cat...

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Main Author:	Balasundram, Vekes
Format:	Thesis
Language:	English
Published:	2018
Subjects:	TP Chemical technology
Online Access:	http://eprints.utm.my/id/eprint/81376/1/VekesBalasundramPFChE2018.pdf
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spelling	my-utm-ep.813762019-08-23T04:06:51Z In-situ catalytic pyrolysis reaction of sugarcane bagasse over nickel-cerium/hzsm-5 for enhanced hydrocarbons in pyrolysis oil 2018 Balasundram, Vekes TP Chemical technology The catalytic of oxygenated pyrolysis vapour over HZSM-5 catalyst is of the preferred method to enhance the quality of pyrolysis oil. However, the content of C6 – C8 hydrocarbons in pyrolysis oil produced by this method is still low. Thus, the main aim of this study is to investigate the in-situ catalytic of oxygenated pyrolysis vapours from sugarcane bagasse into enhanced C6 – C8 hydrocarbons in pyrolysis oil over nickel-cerium/HZSM-5 catalyst. The first aim was to synthesize catalysts via incipient wetness impregnation and characterize via X-ray diffraction, field emission scanning electron microscopy-energy dispersive X-ray, Brunauer Emmett Teller, Fourier transform infrared, and temperature programmed desorption of ammonia. The HZSM-5 was fixed at 94 wt.%, while the balance 6 wt.% was impregnated at nickel to cerium mass ratios as follows: 1:5 (NC1), 2:4 (NC2), 3:3 (NC3), 4:2 (NC4), and 5:1 (NC5). The second aim was to investigate the performance of catalyst in the catalytic of oxygenated pyrolysis vapours into enhanced C6 – C8 hydrocarbons via in-situ fixed bed reactor at pyrolysis reaction temperature ranging from 400 – 600 °C. The catalyst to biomass mass ratios was as follows: 0.5:1.0 (CB1), 1.0:1.0 (CB2), 1.5:1.0 (CB3), 2.0:1.0 (CB4), 2.5:1.0 (CB5), and 3.0:1.0 (CB6). The results show that the in-situ catalytic of oxygenated pyrolysis vapours were significantly influenced by pyrolysis reaction temperatures, catalyst to biomass mass ratios, and nickel to cerium mass ratios. The highest total contents of C6 – C8 hydrocarbons in pyrolysis oil (8.82%) is attained at pyrolysis reaction temperature of 500 °C, catalyst to biomass mass ratio of 1:1, and nickel to cerium mass ratio of 3:3. The third aim was to optimize the process parameters via response surface methodology, in which the optimized C6 – C8 hydrocarbons in pyrolysis oil (8.90%) can be achieved at pyrolysis reaction temperature of 505 °C, catalyst to biomass mass ratio of 1.1:1.0, nickel to cerium mass ratio of 3.14:2.86. The final aim was to perform the kinetic analysis of catalytic pyrolysis process. For the kinetic analysis, the catalytic pyrolysis has achieved higher activation energy (34.02 – 122.23 kJ/mol) than the non-catalytic pyrolysis (17.17 – 66.90 kJ/mol) using the Flynn-Wall-Ozawa method. The reaction mechanisms of non-catalytic and catalytic pyrolysis obtained via the Coats-Redfern method follows power law (n = 1) and chemical reaction (n = 2) respectively. Finally, the catalytic of oxygenated pyrolysis vapours over nickel-cerium/HZSM-5 catalyst can produce high contents of hydrocarbon fuel directly from sugarcane bagasse. 2018 Thesis http://eprints.utm.my/id/eprint/81376/ http://eprints.utm.my/id/eprint/81376/1/VekesBalasundramPFChE2018.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:119485 phd doctoral Universiti Teknologi Malaysia Chemical and Energy Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TP Chemical technology
spellingShingle	TP Chemical technology Balasundram, Vekes In-situ catalytic pyrolysis reaction of sugarcane bagasse over nickel-cerium/hzsm-5 for enhanced hydrocarbons in pyrolysis oil
description	The catalytic of oxygenated pyrolysis vapour over HZSM-5 catalyst is of the preferred method to enhance the quality of pyrolysis oil. However, the content of C6 – C8 hydrocarbons in pyrolysis oil produced by this method is still low. Thus, the main aim of this study is to investigate the in-situ catalytic of oxygenated pyrolysis vapours from sugarcane bagasse into enhanced C6 – C8 hydrocarbons in pyrolysis oil over nickel-cerium/HZSM-5 catalyst. The first aim was to synthesize catalysts via incipient wetness impregnation and characterize via X-ray diffraction, field emission scanning electron microscopy-energy dispersive X-ray, Brunauer Emmett Teller, Fourier transform infrared, and temperature programmed desorption of ammonia. The HZSM-5 was fixed at 94 wt.%, while the balance 6 wt.% was impregnated at nickel to cerium mass ratios as follows: 1:5 (NC1), 2:4 (NC2), 3:3 (NC3), 4:2 (NC4), and 5:1 (NC5). The second aim was to investigate the performance of catalyst in the catalytic of oxygenated pyrolysis vapours into enhanced C6 – C8 hydrocarbons via in-situ fixed bed reactor at pyrolysis reaction temperature ranging from 400 – 600 °C. The catalyst to biomass mass ratios was as follows: 0.5:1.0 (CB1), 1.0:1.0 (CB2), 1.5:1.0 (CB3), 2.0:1.0 (CB4), 2.5:1.0 (CB5), and 3.0:1.0 (CB6). The results show that the in-situ catalytic of oxygenated pyrolysis vapours were significantly influenced by pyrolysis reaction temperatures, catalyst to biomass mass ratios, and nickel to cerium mass ratios. The highest total contents of C6 – C8 hydrocarbons in pyrolysis oil (8.82%) is attained at pyrolysis reaction temperature of 500 °C, catalyst to biomass mass ratio of 1:1, and nickel to cerium mass ratio of 3:3. The third aim was to optimize the process parameters via response surface methodology, in which the optimized C6 – C8 hydrocarbons in pyrolysis oil (8.90%) can be achieved at pyrolysis reaction temperature of 505 °C, catalyst to biomass mass ratio of 1.1:1.0, nickel to cerium mass ratio of 3.14:2.86. The final aim was to perform the kinetic analysis of catalytic pyrolysis process. For the kinetic analysis, the catalytic pyrolysis has achieved higher activation energy (34.02 – 122.23 kJ/mol) than the non-catalytic pyrolysis (17.17 – 66.90 kJ/mol) using the Flynn-Wall-Ozawa method. The reaction mechanisms of non-catalytic and catalytic pyrolysis obtained via the Coats-Redfern method follows power law (n = 1) and chemical reaction (n = 2) respectively. Finally, the catalytic of oxygenated pyrolysis vapours over nickel-cerium/HZSM-5 catalyst can produce high contents of hydrocarbon fuel directly from sugarcane bagasse.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Balasundram, Vekes
author_facet	Balasundram, Vekes
author_sort	Balasundram, Vekes
title	In-situ catalytic pyrolysis reaction of sugarcane bagasse over nickel-cerium/hzsm-5 for enhanced hydrocarbons in pyrolysis oil
title_short	In-situ catalytic pyrolysis reaction of sugarcane bagasse over nickel-cerium/hzsm-5 for enhanced hydrocarbons in pyrolysis oil
title_full	In-situ catalytic pyrolysis reaction of sugarcane bagasse over nickel-cerium/hzsm-5 for enhanced hydrocarbons in pyrolysis oil
title_fullStr	In-situ catalytic pyrolysis reaction of sugarcane bagasse over nickel-cerium/hzsm-5 for enhanced hydrocarbons in pyrolysis oil
title_full_unstemmed	In-situ catalytic pyrolysis reaction of sugarcane bagasse over nickel-cerium/hzsm-5 for enhanced hydrocarbons in pyrolysis oil
title_sort	in-situ catalytic pyrolysis reaction of sugarcane bagasse over nickel-cerium/hzsm-5 for enhanced hydrocarbons in pyrolysis oil
granting_institution	Universiti Teknologi Malaysia
granting_department	Chemical and Energy Engineering
publishDate	2018
url	http://eprints.utm.my/id/eprint/81376/1/VekesBalasundramPFChE2018.pdf
_version_	1747818316754321408

In-situ catalytic pyrolysis reaction of sugarcane bagasse over nickel-cerium/hzsm-5 for enhanced hydrocarbons in pyrolysis oil

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